Mute muted users (Chris's revision, 1 of 2)

assets/l10n/app_en.arb

@@ -1007,17 +1007,13 @@
   "@noEarlierMessages": {
     "description": "Text to show at the start of a message list if there are no earlier messages."
   },
-  "mutedSender": "Muted sender",
-  "@mutedSender": {
-    "description": "Name for a muted user to display in message list."
-  },
-  "revealButtonLabel": "Reveal message for muted sender",
+  "revealButtonLabel": "Reveal message",
   "@revealButtonLabel": {
     "description": "Label for the button revealing hidden message from a muted sender in message list."
   },
   "mutedUser": "Muted user",
   "@mutedUser": {
-    "description": "Name for a muted user to display all over the app."
+    "description": "Text to display in place of a muted user's name."
   },
   "scrollToBottomTooltip": "Scroll to bottom",
   "@scrollToBottomTooltip": {

assets/l10n/app_pl.arb

@@ -1089,10 +1089,6 @@
   "@mutedSender": {
     "description": "Name for a muted user to display in message list."
   },
-  "revealButtonLabel": "Odsłoń wiadomość od wyciszonego użytkownika",
-  "@revealButtonLabel": {
-    "description": "Label for the button revealing hidden message from a muted sender in message list."
-  },
   "mutedUser": "Wyciszony użytkownik",
   "@mutedUser": {
     "description": "Name for a muted user to display all over the app."

assets/l10n/app_ru.arb

@@ -1081,10 +1081,6 @@
   "@mutedSender": {
     "description": "Name for a muted user to display in message list."
   },
-  "revealButtonLabel": "Показать сообщение отключенного отправителя",
-  "@revealButtonLabel": {
-    "description": "Label for the button revealing hidden message from a muted sender in message list."
-  },
   "mutedUser": "Отключенный пользователь",
   "@mutedUser": {
     "description": "Name for a muted user to display all over the app."

lib/generated/l10n/zulip_localizations.dart

@@ -1499,19 +1499,13 @@ abstract class ZulipLocalizations {
   /// **'No earlier messages'**
   String get noEarlierMessages;
 
-  /// Name for a muted user to display in message list.
-  ///
-  /// In en, this message translates to:
-  /// **'Muted sender'**
-  String get mutedSender;
-
   /// Label for the button revealing hidden message from a muted sender in message list.
   ///
   /// In en, this message translates to:
-  /// **'Reveal message for muted sender'**
+  /// **'Reveal message'**
   String get revealButtonLabel;
 
-  /// Name for a muted user to display all over the app.
+  /// Text to display in place of a muted user's name.
   ///
   /// In en, this message translates to:
   /// **'Muted user'**

lib/generated/l10n/zulip_localizations_ar.dart

@@ -820,10 +820,7 @@ class ZulipLocalizationsAr extends ZulipLocalizations {
   String get noEarlierMessages => 'No earlier messages';
 
   @override
-  String get mutedSender => 'Muted sender';
-
-  @override
-  String get revealButtonLabel => 'Reveal message for muted sender';
+  String get revealButtonLabel => 'Reveal message';
 
   @override
   String get mutedUser => 'Muted user';

lib/generated/l10n/zulip_localizations_de.dart

@@ -820,10 +820,7 @@ class ZulipLocalizationsDe extends ZulipLocalizations {
   String get noEarlierMessages => 'No earlier messages';
 
   @override
-  String get mutedSender => 'Muted sender';
-
-  @override
-  String get revealButtonLabel => 'Reveal message for muted sender';
+  String get revealButtonLabel => 'Reveal message';
 
   @override
   String get mutedUser => 'Muted user';

lib/generated/l10n/zulip_localizations_en.dart

@@ -820,10 +820,7 @@ class ZulipLocalizationsEn extends ZulipLocalizations {
   String get noEarlierMessages => 'No earlier messages';
 
   @override
-  String get mutedSender => 'Muted sender';
-
-  @override
-  String get revealButtonLabel => 'Reveal message for muted sender';
+  String get revealButtonLabel => 'Reveal message';
 
   @override
   String get mutedUser => 'Muted user';

lib/generated/l10n/zulip_localizations_ja.dart

@@ -820,10 +820,7 @@ class ZulipLocalizationsJa extends ZulipLocalizations {
   String get noEarlierMessages => 'No earlier messages';
 
   @override
-  String get mutedSender => 'Muted sender';
-
-  @override
-  String get revealButtonLabel => 'Reveal message for muted sender';
+  String get revealButtonLabel => 'Reveal message';
 
   @override
   String get mutedUser => 'Muted user';

lib/generated/l10n/zulip_localizations_nb.dart

@@ -820,10 +820,7 @@ class ZulipLocalizationsNb extends ZulipLocalizations {
   String get noEarlierMessages => 'No earlier messages';
 
   @override
-  String get mutedSender => 'Muted sender';
-
-  @override
-  String get revealButtonLabel => 'Reveal message for muted sender';
+  String get revealButtonLabel => 'Reveal message';
 
   @override
   String get mutedUser => 'Muted user';

lib/generated/l10n/zulip_localizations_pl.dart

@@ -833,10 +833,7 @@ class ZulipLocalizationsPl extends ZulipLocalizations {
   String get noEarlierMessages => 'Brak historii';
 
   @override
-  String get mutedSender => 'Wyciszony nadawca';
-
-  @override
-  String get revealButtonLabel => 'Odsłoń wiadomość od wyciszonego użytkownika';
+  String get revealButtonLabel => 'Reveal message';
 
   @override
   String get mutedUser => 'Wyciszony użytkownik';

lib/generated/l10n/zulip_localizations_ru.dart

@@ -835,10 +835,7 @@ class ZulipLocalizationsRu extends ZulipLocalizations {
   String get noEarlierMessages => 'Предшествующих сообщений нет';
 
   @override
-  String get mutedSender => 'Отключенный отправитель';
-
-  @override
-  String get revealButtonLabel => 'Показать сообщение отключенного отправителя';
+  String get revealButtonLabel => 'Reveal message';
 
   @override
   String get mutedUser => 'Отключенный пользователь';

lib/generated/l10n/zulip_localizations_sk.dart

@@ -822,10 +822,7 @@ class ZulipLocalizationsSk extends ZulipLocalizations {
   String get noEarlierMessages => 'No earlier messages';
 
   @override
-  String get mutedSender => 'Muted sender';
-
-  @override
-  String get revealButtonLabel => 'Reveal message for muted sender';
+  String get revealButtonLabel => 'Reveal message';
 
   @override
   String get mutedUser => 'Muted user';

lib/generated/l10n/zulip_localizations_uk.dart

@@ -834,10 +834,7 @@ class ZulipLocalizationsUk extends ZulipLocalizations {
   String get noEarlierMessages => 'Немає попередніх повідомлень';
 
   @override
-  String get mutedSender => 'Muted sender';
-
-  @override
-  String get revealButtonLabel => 'Reveal message for muted sender';
+  String get revealButtonLabel => 'Reveal message';
 
   @override
   String get mutedUser => 'Muted user';

lib/generated/l10n/zulip_localizations_zh.dart

@@ -820,10 +820,7 @@ class ZulipLocalizationsZh extends ZulipLocalizations {
   String get noEarlierMessages => 'No earlier messages';
 
   @override
-  String get mutedSender => 'Muted sender';
-
-  @override
-  String get revealButtonLabel => 'Reveal message for muted sender';
+  String get revealButtonLabel => 'Reveal message';
 
   @override
   String get mutedUser => 'Muted user';

lib/model/compose.dart

@@ -130,14 +130,33 @@ String wrapWithBacktickFence({required String content, String? infoString}) {
 /// To omit the user ID part ("|13313") whenever the name part is unambiguous,
 /// pass the full UserStore.  This means accepting a linear scan
 /// through all users; avoid it in performance-sensitive codepaths.
+///
+/// See also [userMentionFromMessage].
 String userMention(User user, {bool silent = false, UserStore? users}) {
   bool includeUserId = users == null
     || users.allUsers.where((u) => u.fullName == user.fullName)
          .take(2).length == 2;
-
-  return '@${silent ? '_' : ''}**${user.fullName}${includeUserId ? '|${user.userId}' : ''}**';
+  return _userMentionImpl(
+    silent: silent,
+    fullName: user.fullName,
+    userId: includeUserId ? user.userId : null);
 }
 
+/// An @-mention of an individual user, like @**Chris Bobbe|13313**,
+/// from sender data in a [Message].
+///
+/// The user ID part ("|13313") is always included.
+///
+/// See also [userMention].
+String userMentionFromMessage(Message message, {bool silent = false, required UserStore users}) =>
+  _userMentionImpl(
+    silent: silent,
+    fullName: users.senderDisplayName(message, replaceIfMuted: false),
+    userId: message.senderId);
+
+String _userMentionImpl({required bool silent, required String fullName, int? userId}) =>
+  '@${silent ? '_' : ''}**$fullName${userId != null ? '|$userId' : ''}**';
+
 /// An @-mention of all the users in a conversation, like @**channel**.
 String wildcardMention(WildcardMentionOption wildcardOption, {
   required PerAccountStore store,
@@ -190,13 +209,11 @@ String quoteAndReplyPlaceholder(
   PerAccountStore store, {
   required Message message,
 }) {
-  final sender = store.getUser(message.senderId);
-  assert(sender != null); // TODO(#716): should use `store.senderDisplayName`
   final url = narrowLink(store,
     SendableNarrow.ofMessage(message, selfUserId: store.selfUserId),
     nearMessageId: message.id);
-  // See note in [quoteAndReply] about asking `mention` to omit the |<id> part.
-  return '${userMention(sender!, silent: true)} ${inlineLink('said', url)}: ' // TODO(#1285)
+  return '${userMentionFromMessage(message, silent: true, users: store)} '
+    '${inlineLink('said', url)}: ' // TODO(#1285)
     '*${zulipLocalizations.composeBoxLoadingMessage(message.id)}*\n';
 }
 
@@ -212,14 +229,14 @@ String quoteAndReply(PerAccountStore store, {
   required Message message,
   required String rawContent,
 }) {
-  final sender = store.getUser(message.senderId);
-  assert(sender != null); // TODO(#716): should use `store.senderDisplayName`
   final url = narrowLink(store,
     SendableNarrow.ofMessage(message, selfUserId: store.selfUserId),
     nearMessageId: message.id);
-    // Could ask `mention` to omit the |<id> part unless the mention is ambiguous…
-    // but that would mean a linear scan through all users, and the extra noise
-    // won't much matter with the already probably-long message link in there too.
-    return '${userMention(sender!, silent: true)} ${inlineLink('said', url)}:\n' // TODO(#1285)
-      '${wrapWithBacktickFence(content: rawContent, infoString: 'quote')}';
+  // Could ask userMentionFromMessage to omit the |<id> part unless the mention
+  // is ambiguous… but that would mean a linear scan through all users,
+  // and the extra noise won't much matter with the already probably-long
+  // message link in there too.
+  return '${userMentionFromMessage(message, silent: true, users: store)} '
+    '${inlineLink('said', url)}:\n' // TODO(#1285)
+    '${wrapWithBacktickFence(content: rawContent, infoString: 'quote')}';
 }

lib/model/store.dart

@@ -675,10 +675,13 @@ class PerAccountStore extends PerAccountStoreBase with ChangeNotifier, EmojiStor
     return byDate.difference(dateJoined).inDays >= realmWaitingPeriodThreshold;
   }
 
-  /// The given user's real email address, if known, for displaying in the UI.
+  /// The user's real email address, if known, for displaying in the UI.
   ///
-  /// Returns null if self-user isn't able to see [user]'s real email address.
-  String? userDisplayEmail(User user) {
+  /// Returns null if self-user isn't able to see the user's real email address,
+  /// or if the user isn't actually a user we know about.
+  String? userDisplayEmail(int userId) {
+    final user = getUser(userId);
+    if (user == null) return null;
     if (zulipFeatureLevel >= 163) { // TODO(server-7)
       // A non-null value means self-user has access to [user]'s real email,
       // while a null value means it doesn't have access to the email.

lib/model/user.dart

@@ -44,27 +44,40 @@ mixin UserStore on PerAccountStoreBase {
 
   /// The name to show the given user as in the UI, even for unknown users.
   ///
-  /// This is the user's [User.fullName] if the user is known,
-  /// and otherwise a translation of "(unknown user)".
+  /// If the user is muted and [replaceIfMuted] is true (the default),
+  /// this is [ZulipLocalizations.mutedUser].
+  ///
+  /// Otherwise this is the user's [User.fullName] if the user is known,
+  /// or (if unknown) [ZulipLocalizations.unknownUserName].
   ///
   /// When a [Message] is available which the user sent,
   /// use [senderDisplayName] instead for a better-informed fallback.
-  String userDisplayName(int userId) {
+  String userDisplayName(int userId, {bool replaceIfMuted = true}) {
+    if (replaceIfMuted && isUserMuted(userId)) {
+      return GlobalLocalizations.zulipLocalizations.mutedUser;
+    }
     return getUser(userId)?.fullName
       ?? GlobalLocalizations.zulipLocalizations.unknownUserName;
   }
 
   /// The name to show for the given message's sender in the UI.
   ///
-  /// If the user is known (see [getUser]), this is their current [User.fullName].
+  /// If the sender is muted and [replaceIfMuted] is true (the default),
+  /// this is [ZulipLocalizations.mutedUser].
+  ///
+  /// Otherwise, if the user is known (see [getUser]),
+  /// this is their current [User.fullName].
   /// If unknown, this uses the fallback value conveniently provided on the
   /// [Message] object itself, namely [Message.senderFullName].
   ///
   /// For a user who isn't the sender of some known message,
   /// see [userDisplayName].
-  String senderDisplayName(Message message) {
-    return getUser(message.senderId)?.fullName
-      ?? message.senderFullName;
+  String senderDisplayName(Message message, {bool replaceIfMuted = true}) {
+    final senderId = message.senderId;
+    if (replaceIfMuted && isUserMuted(senderId)) {
+      return GlobalLocalizations.zulipLocalizations.mutedUser;
+    }
+    return getUser(senderId)?.fullName ?? message.senderFullName;
   }
 
   /// Whether the user with [userId] is muted by the self-user.

lib/widgets/action_sheet.dart

@@ -589,6 +589,8 @@ void showMessageActionSheet({required BuildContext context, required Message mes
   final markAsUnreadSupported = store.zulipFeatureLevel >= 155; // TODO(server-6)
   final showMarkAsUnreadButton = markAsUnreadSupported && isMessageRead;
 
+  final isSenderMuted = store.isUserMuted(message.senderId);
+
   final optionButtons = [
     if (popularEmojiLoaded)
       ReactionButtons(message: message, pageContext: pageContext),
@@ -597,6 +599,8 @@ void showMessageActionSheet({required BuildContext context, required Message mes
       QuoteAndReplyButton(message: message, pageContext: pageContext),
     if (showMarkAsUnreadButton)
       MarkAsUnreadButton(message: message, pageContext: pageContext),
+    if (isSenderMuted)
+      UnrevealMutedMessageButton(message: message, pageContext: pageContext),
     CopyMessageTextButton(message: message, pageContext: pageContext),
     CopyMessageLinkButton(message: message, pageContext: pageContext),
     ShareButton(message: message, pageContext: pageContext),
@@ -902,6 +906,27 @@ class MarkAsUnreadButton extends MessageActionSheetMenuItemButton {
   }
 }
 
+class UnrevealMutedMessageButton extends MessageActionSheetMenuItemButton {
+  UnrevealMutedMessageButton({
+    super.key,
+    required super.message,
+    required super.pageContext,
+  });
+
+  @override
+  IconData get icon => ZulipIcons.eye_off;
+
+  @override
+  String label(ZulipLocalizations zulipLocalizations) {
+    return zulipLocalizations.actionSheetOptionHideMutedMessage;
+  }
+
+  @override
+  void onPressed() {
+    findMessageListPage().unrevealMutedMessage(message.id);
+  }
+}
+
 class CopyMessageTextButton extends MessageActionSheetMenuItemButton {
   CopyMessageTextButton({super.key, required super.message, required super.pageContext});
 

lib/widgets/autocomplete.dart

@@ -275,10 +275,9 @@ class _MentionAutocompleteItem extends StatelessWidget {
     String? sublabel;
     switch (option) {
       case UserMentionAutocompleteResult(:var userId):
-        final user = store.getUser(userId)!; // must exist because UserMentionAutocompleteResult
         avatar = Avatar(userId: userId, size: 36, borderRadius: 4);
-        label = user.fullName;
-        sublabel = store.userDisplayEmail(user);
+        label = store.userDisplayName(userId);
+        sublabel = store.userDisplayEmail(userId);
       case WildcardMentionAutocompleteResult(:var wildcardOption):
         avatar = SizedBox.square(dimension: 36,
           child: const Icon(ZulipIcons.three_person, size: 24));